Lubricant compressor



the discharge conduit;

Patented May 26, 1925.

EARL F. PIRCE, 0F CHICAGO, ILLINOIS, ASSIGNOB TO THE BASSICK MANUFACTUR-ING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F DELAWARE.

LUBRICAN T COMPRESSOR.

Application tiled April 21, 1924. Serial No. 708,008.

T 0 aZ 101mm if may Concern:

Be it known that l. EARL F. PIERCE, a citizen of the United States, andresident o'f Chicago, in the'county of Cook and State of Illinois, haveinvented a certain new and useful` Improvement in Lubricant Compressors,of which the following is a full` clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to improvements in lubricant compressors, and isparticularly concerned with the provision of a novel type of lubricantcompressor for supply.- ing lubricant underhigh pressure to bearings tobe lubricated. My improved compressor is particularly designed, thoughnot limited, to form a part of a lubricating system comprising aplurality 'of fittings, one of which is secured to each of the bearingsof the mechanism to be lubricated, and a compressor comprising means forplacing the lubricant therein under high pressure, and having, inaddition, means fons making sealed contact with the various fittings sothat lubricant under high pressure can be forced thereinto.

The objects of my invention are:

First, to provide a' compressor of the character described, which issimple in construction, economical to manufacture, and easy to operate;

Second, to provide a compressorr of the character described comprising abarrel, or low pressure cylinder, for holding a sup` ply of lubricant,and a high pressure cylinder communicating with the barrel, and meansfor discharging lubricant from the high pressure cylinder into thebearings under high pressure;

Third, to provide a lubricant compressor of the character described,including a flexible discharge conduit.. terminating ina member formaking sealed connection with the various fittings, the high pressurecylinder being located between the barrel and Fourth, to provide acompressor of the character described, in which the high pressure uponthe lubricant is created by rotating thegbarrel, or low pressurecylinder, relatively yto another portion ofthe compressor which is provied with a handle.

Other objects of my invention will appear as this descriptionprogresses, reference bel ing had to the accompanying drawings, inwhich- A Figure 1 is a central longitudinal section through my improvedcompressor, the discharge conduit and associated parts thereof beingshown in side elevation, and

Figure 2 is a view, partially in elevation and partially in section,showing one form of fitting which can be used as a part of a lubricatingsystem embodying my invention.

Referring to the drawings, my improved compressor comprises a barrel, orlow pres'- sure cylinder 5 having the detachable cap 6. This cap isprovided with an air vent 7 to permit access of air to the interior ofthe barrel 5. A rod 8 is secured to the vcap 6 and extends inwardlytherefrom. The in ner end of this rod is reduced in section, as shown at8, and terminates in a' head 9, the features of which will later bereferred to. A piston P,`compr ising the face plate 10, cup leather 11,and the follower plate 12, all of which are held together by the sleeve13, is slidably mounted upon the rod 8, and adapted to contact with thelubricant confined between the iston P and the end closure 14 of thebarre The end closure 14 terminates in a tubular extension 15, to whichis secured, by means of a screw threaded connection 16, the sleeve, orhigh pressure cylinder 17.

' A metal washer 18, and a fibre or felt washer 19, are clamped betweenthe shoul der 20 on the sleeve 17 and the end of the tubular extension15. The washer 18 forms a valve seat for the valve 21, the stem 22 ofwhich projects into the tubular extension 15 and terminates in the head23. A s ring 24, conined between this head an the washer 18, providesmeans for ieldingly holding the valve 21 in itsclosedl position. Asecond plunger P is reciprocably mounted in the high pressure cy inder17. This piston comprises` the washer orgasket 25, which is preferablymade of leather, and the edge of which is preferably confined in a sheetmetal ring 26. A `cup leather 27 is positioned in the bore of the highpressure cylinder 17 immediately behind the gasket 25, and surrounds theouter end of the .tubular displacing member, 28. A beveled ring 29 alsosurrounds the vdisplacing member 28. The inner end of the tubular member28 is flanged over, as shown at 30, to

form a seat for the valve 31. This valve is yieldingly held against itsseat by the 'tension spring 32. confined valve and the inturned flange33 at `the outer end of the tubular member 28.

'he ;-iston'P', comprising the elements just described, is yieldinglyheld in its outermost position by a compression spring 34, confinedbetween the ring 29 und the washer 18 The outer end of the high(pressure cylinder-7 has a pair oi' oppositely isposed cam slots 35formed therein for receiving the ins or projections l'extending outwai-(ily from opposite sides of the hollow plunger 37. A cap 38 threadedonto the outer end of the s eeve 17 vprovides means for preventing thepins 36vfrom being completely withdrawn from the cam slots 35, theint'urned flange` 39 of this cap performing the functions just referredto.

A sleeve 40-is secured to the outer end of the plunger 37 andcommunicates therewith.

This sleeve carries the handle 41, and alsol has a plug 42 threadedyinto one side thereof for a purpose which will later be referred to.

The fiexible-` discharge conduit 43 is secured to the sleeve 40 andplaced in communication therewith by means of the hollow swivel coupling44, the detailsof construction of which may be varied as desired, andwhich, for that reason, is not described in detail herein. lThedischarge com duit 43 terminates in a coupling member 45 of well-knownconstruction, and comprises, among other things, the pair of oppositelydisposed bayonet yor cam slots 46, which are adapted to receive the ends47 of the pin, which extends through the fit ting 48. This fittin ishere illustrated as being attached to a aring 49, which is to receivelubricant from the compressor vjust described.

The operation of my improved compressor is as follows:

Assuming that the s'pace between the 1ston P and the closure 14 isfilled with lu ricant, the operator attaches the coupling member 45 to afitting 48, and then, grasping the barrel 5 in one hand, and the handle41 in the other hand, the operator oscillates the barrel 5 relativel tothe handle 41, or the handle 41 relatively to the barrel `5, whichevermay be most convenient. When the barrel 5 is turned in the prordirection to cause4 the plunger 37 to drawn into the high pressurecylinder b the action of the slots 35 and lpins 36, t e pistonconstruction P will be forced inwardly, and

y an lubricant confined in the highpressure between the of the spring34, thereby tendiniy to create a vacuum in the high pressure cy inder,and to draw lubricant from the barrel 5 past the valve 21 and into thehigh pressure cylinder. The charging of the high pressure c 'linder fromthe barrel 5 is expedited and insured by the action of the piston P, theouter face of which is subjected to atmospheric pressure entering thebarrel 5 through the vent 7.

By oscillating the barrel 5 and the handle 41 relatively to each other,as described above, successive charges of lubricant can be forcedthrough the conduit 43. the coupling 45, and into the litting'48, untila suilicient quantit of lubricant has been forced thereinto. e operatorthen detaches the cou- Eling member 45 and attaches it to the next ttingto be lubricated, where he repeats the operations just described.

l Vlxen the piston P has moved inwardly until it surrounds the reducedportion 8 of the rod 8, the operator can remove the piston P from thebarrel 5 for the purpose of refilling the latter by simpl unscrewing thecap 6 yand pulling it away from'the barrel 5. The head 9 on the end ofthe rod 8 engages the sleeve 1 3 and carries the piston P with it. Airpaing between the sleeve 13 and the reduced portion 8' of the rodrelieves the vacuum which might otherwise be roduced back of the pistonP, and tllus enables the latter easily to be withdrawn from the barrel5.

If desired, tlie operator can reverse the positions of the plug 42'andthe swivel 44 so that the latter will be in line with the handle 41.This ma .make it somewhat more easy to approac bearingsin certainpositions than it would be with the discharge conduit connected, asshown in the drawings. n Y

lVhile I have described the details of construction of the preferredembodiment of my invention, it is to be clearly understood that myinvention is not limited to these details, but. is capable of othermodifications and adaptatlons within the scopejof the ap nded claims.

Havlng thus described my invention, what I claim 1. A lubricantcompressor comprisinga barrel, a piston reciprocable in said barrel, acilinder communicating with said barrel, an having a cam slot at itsouter end, an outwardly opening check valve between said barrel andysaid cylinder, a piston reciprocable in said cylinder, a hollow'plunger reciprocable in the outer end of said cylinder and having aprojecting pin slidable in said cam slot, a handle secured to said pluner, and a discharge conduit secured to said ollow plunger andcommunicating therewith.

2. A lubricant Jcompressor comprising a barrel, a cylinder communicatingwith said barrel and having a cam slot at its outer end, a valve betweensaid barrel and said cylinder, a piston reciprocable in said cylinder, ahollow plunger reciprocable in the outer end of said cylinder and havinga projecting pin slidable in said cam slot, a handle secured to saidplunger, and a discharge conduit secured to said hollow plunger andcommunicating therewith.

3. A lubricant.v compressor 'comprising a barrel, a cylindercommunicating with said barrel, a piston reciprocable in said cylinder,a hollow plunger reciprocable in the outer end of said cylinder, a camconnection between said plunger and said cylinder for reciprocating saidplunger and cylinder relatively to eachother when said plunger andcylinder are rotated relatively to each other, a handle secured to saidplunger, and a discharge conduit communicating` with said plunger.

4. A lubricant compressor comprising a barrel, a cylinder communicatingtherewith, a piston reciprocable in said barrel, a discharge -conduitcommunicating with said cylinder, a plunger reciprocable in saidcylinder, a handle secured to said plunger, and connections between saidcylinder and said plunger for reciprocating said last mentioned elementsrelatively to each other ywhen said last mentioned elements are rotated.relatively to each other.

